Beginning in August 1997, smoke alarm regulations in Tasmania have required that both new residential buildings and those undergoing renovations necessitating a building permit must have a minimum of one smoke alarm on each level. This smoke alarm must have a direct connection to the electrical supply of that building. In addition, this smoke alarm must possess a battery backup.
To read more, visit Tasmanian Fire Service
https://www.homefiresafety.tas.gov.au/fire-safety-equipment/smoke-alarms
